Abstract
II–VI semiconductors exhibit unique behaviors that can generate dual-holes (“heavy and light”), but the application in photocatalysis is still missing. Herein, an empirical utilization of light/heavy holes in a hybrid metal cluster-2D semiconductor nanoplatelets is reported. This hybrid material can boost the hole-transfer at the surface and suppress the recombination. Different roles are enacted by light-holes and heavy-holes, in which the light-holes with higher energy and mobility can facilitate the slow kinetics of water oxidation and further reduce the onset voltage, while the massive heavy-holes can increase the resulting photocurrent by about five times, achieving a photocurrent of 2 mA cm−2 at 1.23 V versus RHE under AM 1.5 G illumination in nonsacrificial neutral solution. These strategies can be the solutions for photoelectrolysis and be beneficial for sustainable development in solar conversion.
Original language | English |
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Article number | 1704047 |
Journal | Small |
Volume | 14 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2018 Apr 5 |
Keywords
- cadmium selenide
- light holes
- nanoplatelets
- photoelectrochemistry
- photoelectrolysis
ASJC Scopus subject areas
- Biotechnology
- Biomaterials
- Chemistry(all)
- Materials Science(all)